1. Butterfly valve
Large flow gas delivery: Butterfly valves have good flow characteristics in large-diameter pipelines and are suitable for gas delivery systems with high flow requirements, such as air ducts in ventilation systems and air-conditioning systems.
Medium containing particles: Butterfly valves can also adapt well to some media containing a small amount of particles or fibers. When the valve plate is opened, the channel is relatively large and not easily blocked by impurities.
Low-pressure working conditions: Butterfly valves are generally suitable for low-pressure pipeline systems with a nominal pressure of PN ≤ 1.6MPa.
Medium and low temperature environment: The material and seals of butterfly valves can usually adapt to medium and low temperature environments of -20℃ to 200℃, and are widely used in some normal temperature water supply and drainage systems and air conditioning systems.
2. Ball valve
Clean fluid: Ball valves are usually suitable for clean liquid or gas media, such as pure air, compressed air, etc. The sealing surface between the ball and the valve seat is relatively narrow, and the cleanliness of the medium is required to be high.
Viscous fluid: For fluids with higher viscosity, ball valves can better cut off the medium when closed to prevent leakage.
Small and medium-sized pipes: Ball valves are usually suitable for small and medium-sized pipes, especially pipes with a nominal diameter of DN ≤ 200mm. In small and medium-sized pipes, ball valves have better sealing performance and operational flexibility.
Frequent switching conditions: Ball valves have fast opening and closing speeds and are easy to operate. They are suitable for frequent switching conditions, such as fluid control on some automated production lines.
3. Check valve
Prevent medium backflow: Check valve is also called one-way valve or non-return valve. Its main function is to prevent medium backflow in pipeline, ensure that medium flows in only one direction in pipeline, and protect equipment from impact and damage of reverse flow medium.
4. Regulating valve
Flow and pressure control: Regulating valve can be used to control the flow, pressure and other parameters of fluid medium to meet the requirements of different processes and equipment. In water pipelines, water pressure can be adjusted by regulating valve to stabilize flow; in gas systems, gas pressure can be adjusted by regulating valve to make it work normally.
5. Safety valve
Safety protection: The key function of safety valve is to prevent medium pressure in pipeline or device from exceeding the specified value, so as to achieve the purpose of safety protection. When the system pressure exceeds the set value, the safety valve automatically opens to release excess pressure, and then automatically closes after the pressure returns to normal.
In summary, different types of valves have their own unique application scenarios and advantages in air pipelines. When selecting valves, it is necessary to comprehensively consider factors such as the specific needs of the pipeline system, gas flow, pressure, temperature and valve characteristics.
Large flow gas delivery: Butterfly valves have good flow characteristics in large-diameter pipelines and are suitable for gas delivery systems with high flow requirements, such as air ducts in ventilation systems and air-conditioning systems.
Medium containing particles: Butterfly valves can also adapt well to some media containing a small amount of particles or fibers. When the valve plate is opened, the channel is relatively large and not easily blocked by impurities.
Low-pressure working conditions: Butterfly valves are generally suitable for low-pressure pipeline systems with a nominal pressure of PN ≤ 1.6MPa.
Medium and low temperature environment: The material and seals of butterfly valves can usually adapt to medium and low temperature environments of -20℃ to 200℃, and are widely used in some normal temperature water supply and drainage systems and air conditioning systems.
2. Ball valve
Clean fluid: Ball valves are usually suitable for clean liquid or gas media, such as pure air, compressed air, etc. The sealing surface between the ball and the valve seat is relatively narrow, and the cleanliness of the medium is required to be high.
Viscous fluid: For fluids with higher viscosity, ball valves can better cut off the medium when closed to prevent leakage.
Small and medium-sized pipes: Ball valves are usually suitable for small and medium-sized pipes, especially pipes with a nominal diameter of DN ≤ 200mm. In small and medium-sized pipes, ball valves have better sealing performance and operational flexibility.
Frequent switching conditions: Ball valves have fast opening and closing speeds and are easy to operate. They are suitable for frequent switching conditions, such as fluid control on some automated production lines.
3. Check valve
Prevent medium backflow: Check valve is also called one-way valve or non-return valve. Its main function is to prevent medium backflow in pipeline, ensure that medium flows in only one direction in pipeline, and protect equipment from impact and damage of reverse flow medium.
4. Regulating valve
Flow and pressure control: Regulating valve can be used to control the flow, pressure and other parameters of fluid medium to meet the requirements of different processes and equipment. In water pipelines, water pressure can be adjusted by regulating valve to stabilize flow; in gas systems, gas pressure can be adjusted by regulating valve to make it work normally.
5. Safety valve
Safety protection: The key function of safety valve is to prevent medium pressure in pipeline or device from exceeding the specified value, so as to achieve the purpose of safety protection. When the system pressure exceeds the set value, the safety valve automatically opens to release excess pressure, and then automatically closes after the pressure returns to normal.
In summary, different types of valves have their own unique application scenarios and advantages in air pipelines. When selecting valves, it is necessary to comprehensively consider factors such as the specific needs of the pipeline system, gas flow, pressure, temperature and valve characteristics.
